Universal siderail



FIG. 1 is a top view of a universal siderail embodying my new design;

FIG. 2 is a front side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a back side view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for a universal siderail, as shown.